Influence of thermodynamic models on the prediction of pool boiling heat transfer coefficient of dilute binary mixtures

Sarafraz, M.M.; Peyghambarzadeh, S.M.

doi:10.1016/j.icheatmasstransfer.2012.06.020

Cited by 45 publications

(29 citation statements)

References 27 publications

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“…The interesting point of this study is related to this fact that during the fouling formation on the surface, the heat transfer coefficient does not change over the time, which means that the iron oxide fouling has no significant impact on the boiling thermal performance of nano-fluid. All the findings in this work are in a good a good agreement with those of obtained in previous publications [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] and this work is regarded as a confirmation for our previous works. …”

Section: Fouling Formationsupporting

confidence: 93%

Thermal behavior of aqueous iron oxide nano-fluid as a coolant on a flat disc heater under the pool boiling condition

et al. 2016

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Section: Fouling Formationsupporting

confidence: 93%

Thermal behavior of aqueous iron oxide nano-fluid as a coolant on a flat disc heater under the pool boiling condition

et al. 2016

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“…Therefore, zirconia/water nanofluid offers better thermal properties than water. This is conjunction with the previous studies conducted on nanofluids and particulate fluids [69][70][71][72][73][74][75][76][77][78]. Figure 8a-c shows the variation of the thermo-physical properties of the nanofluid with temperature within the range of 40-60 °C.…”

Section: Heat Fluxsupporting

confidence: 87%

Thermal performance of a micro heat exchanger (MHE) working with zirconia-based nanofluids for industrial cooling

Nikkhah

Nakhjavani

2019

Int J Ind Chem

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An experimental investigation was performed with the view to assess the heat transfer characteristics of a water-based nanofluid in a micro heat exchanger employed to quench a high heat flux heater for industrial and microelectronic cooling applications. The experiments were conducted at heat fluxes 10-70 kW/m 2 and for nanofluids at various mass concentrations of 0.1-0.3% and passing flow rates of 0.1-5 l/min. Thermo-physical properties of the nanofluid including thermal conductivity, heat capacity, density and viscosity of nanofluid were experimentally measured at 40 °C close to the temperature of the experiments. Results showed that the heat transfer coefficient and pressure drop were augmented by 40.1% and 67% at wt% = 0.3 compared to the base fluid, respectively. The enhancement in the heat transfer coefficient was associated with the improvement in the thermal conductivity of the base fluid together with the intensification of Brownian motion and thermophoresis effect. The increase in the pressure drop was also attributed to the increase in the viscosity of the working fluid which induces layer-layer frictional forces in the bulk of the coolant in micro heat exchanger.

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“…(7): (8) In this research, A 0 , for SO 2 /water can be considered 2. 35. In these circumstances, better agreement of the experimental data with the computed results is recorded.…”

Section: A New Correlation For Heat Transfer Coeffi Cientmentioning

confidence: 73%

“…Most of the earlier correlations' bodies consisted of physical properties (see tables 1-2) 35 . To estimate the physical properties, for each property, a large number of accurate correlations with the uncertainty lower than 10% were separated from the other existing correlations in the well-known handbooks 25- 27 .…”

Section: Physical Properties Of Water/somentioning

confidence: 99%

Enhancement of the pool boiling heat transfer coefficient using the gas injection into the water

Sarafraz

Peyghambarzadeh

Fazel

2012

Polish Journal of Chemical Technology

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In this paper, a new method for enhancing the pool boiling heat transfer coeffi cient of pure liquid, based on the gas injection through the liquids has been introduced. Hence, the effect of gas dissolved in a stagnant liquid on pool boiling heat transfer coeffi cient, nucleation site density, and bubble departure diameter has experimentally been investigated for different mole fractions of SO 2 and various heat fl uxes up to 114 kW/ m 2 . The presence of SO 2 in captured vapor inside the bubbles, particularly around the heat transfer surface increases the pool boiling heat transfer coeffi cient. The available predicted correlations are unable to obtain the reasonable values for pool boiling heat transfer coeffi cient in this particular case. Therefore, to predict the pool boiling heat transfer coeffi cient accurately, a new modifi ed correlation based on Stephan-Körner relation has been proposed. Also, during the experiments, it is found that nucleation site density is a strictly exponential function of heat fl ux. Accordingly, a new correlation has been obtained to predict the nucleation site density. The major application of the nucleation site density is in the estimating of mean bubble diameters as well as local agitation due to the rate of bubble frequency.

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Influence of thermodynamic models on the prediction of pool boiling heat transfer coefficient of dilute binary mixtures

Cited by 45 publications

References 27 publications

Thermal behavior of aqueous iron oxide nano-fluid as a coolant on a flat disc heater under the pool boiling condition

Thermal behavior of aqueous iron oxide nano-fluid as a coolant on a flat disc heater under the pool boiling condition

Thermal performance of a micro heat exchanger (MHE) working with zirconia-based nanofluids for industrial cooling

Enhancement of the pool boiling heat transfer coefficient using the gas injection into the water

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